Hi!! I am a newbie who is trying to implement a plugin using vtkPythonAlgorithmBase.
I was able to implement a point volume interpolator using vtkPointInterpolator (I am trying to do it without using the paraview.simple module). Then, I return to the RequestData a vtkImageData using pointVolumeInterpolator.GetOutput().
And, when I use this new filter in ParaView, I obtained a vtkImageData with the same information as if i use the point volume interpolation filter, but I cannot see anything in the render view, and I do not know why.
I also upload the methods I implemented in order to generate this vtkImageData.
OUTPUT FUNCTION
POINT VOLUME INTERPOLATOR
VALUES
OTHER
Any help to understand why is this happening will be appreciated!!!
Thanks 
PS: If it helps, I am using ParaView 5.6.0